baber/WOPTO huggingface dataset:
Patent GB-901844-A (GB)
Title: Tube tapering machine
IPC: B21C37/18
Filed: 1959-07-02
Abstract: 901,844. Making tapered tubes; drawing; stretching. LE FIELL, C. K. July 2, 1959 [July 21, 1958], No. 22787/59. Classes 83 (2) and 83 (4). In a method of tapering a tube radially-inward, forces are applied to localized portions of the tube progressively along its length while the tube is rotated and subjected to axial force of constant or varying magnitude. A tube T is held in chucks 14, 23 attached to spindles 12, 17, which are mounted respectively in a fixed headstock 11 and a travelling tailstock 16 and is rotated by belt drives from a shaft 27. During rotation of the tube a carrier 15 for adjustable dies 31, 32 is traversed along the tube by a ram 50, the dies being at the same time rotated in response to the movement of a follower 57 along a template 58. The follower 57 is biased against the template by a ram 42, shaft deflection of the follower to a neutral position actuating a control valve 44 attached to a rack 40 carried on the piston-rod 41 of the ram 42 so that flow to the upper end of the cylinder ceases. Thus, according to the action of the template 58 on the follower 57, fluid is admitted to the ram 42 to raise or lower the rack 40 to rotate the dies 31, 32 through gearing. Rotation of the dies, which have tapered grooves of semi-circular cross-section, in one direction causes a decrease in the size of the die aperture while rotation in the reverse direction increases the size, the die aperture being adjusted in accordance with the template 58 to effect the registered taper. In order to maintain tne wall thickness constant or to increase or decrease it during tapering, the tube is subjected to a variable axial force by a ram 53 which traverses the tail-stock 16, the fluid supplied to the ram 53 being regulated by a control valve 56 operated in response to the movement of a roller 47 over a template 48. The axial force is usually tensile but may be compressive.
Patent GB-276162-A (GB)
Title: An improved fastener for non-slip bar on horse-shoes
IPC: A01L7/02
Filed: 1926-09-16
Abstract: 276,162. Cobb, G. W. Sept. 16, 1926. Renewable treads. - A heel-bar a of rubber or similar material for preventing slipping is gripped between the heel calks and fasteners b, which are riveted or otherwise secured to the shoe. One fastener may be used at each side of the shoe, or a single fastener extending the width of the shoe may be employed. The surface of the fastener which bears against the heel-bar may be roughened, or an inclined tongue c, Fig. 5 may be provided. Lateral movement of the heel-bar may be prevented by bent-over extensions of the fasteners, as in Fig. 6.
Patent GB-662512-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/20
Filed: 1949-09-02
Abstract: 662,512. Photographic shutters. KODAK, Ltd. Sept. 2, 1949 [Sept. 10, 1948], No. 22846/49. Class 98 (i). Means for opening for focusing purposes a photographic shutter, having pivoted shutterblades opened and closed by mechanism including a spring-operated blade-ring 9 and having pin-and-slot connected pivoted coverblades 32 having an operating lever 38 actuated by the exposure trigger 21, comprises a manually-operable lever 41 which has a latch 44 engageable with a notch 57 in the blade-ring when the blades are fully opened, as shown, by clockwise movement from rest of said ring by means of the shutter setting lever, and which is also provided with means for actuating the cover blade operating lever 38 as by hooked finger 42 engaging the pin 37 on lever 38 interconnecting the cover blades. Preferably the lever 41 is urged anti-clockwise by a spring 47 and is manually operated by a push-button 50. To free the latch 44, 57 after focusing, the push-button is released and the blade ring is rotated clockwise a short distance, whereafter either the shutter may be set by continuing such movement or it may be allowed to return to rest by releasing hold of the setting lever. The shutter described is that disclosed in Specification 650,874. Specification 536,558 also is referred to.
Patent GB-1013911-A (GB)
Title: Improvements in or relating to current converters including inverter stages
IPC: H05B41/282
Filed: 1962-06-14
Abstract: 1,013,911. Converting. INTRON INTERNATIONAL Inc. June 14, 1962 [June 14, 1961; June 29, 1961], No. 22859/62. Heading H2F. [Also in Division G3] A converter comprises or includes a parallel inverter 19<SP>1</SP>, 19<SP>11</SP>, 20 wherein an additional three-electrode element 22 is provided to shut off the conducting element 19<SP>1</SP> or 19<SP>11</SP> thereby varying the width of the output pulses and hence the output voltage. As shown, a signal from a source 10 is clipped by Zener diodes 12, 13 and applied to a transformer whose output is differentiated and applied as trains of alternate firing pulses to the elements 19<SP>1</SP>, 19<SP>11</SP>. A further signal from source 10 is applied via a time-delaying magnetic amplifier 30 to a transformer 28 whose output is differentiated and applied as pulses to the element 22 which is in series with the input D.C. supply 21. The width of output half-waves is dependent on the delay produced by the magnetic amplifier in response to current through its control winding. As shown automatic regulation is effected by rectifying a measure of the output voltage at 24, 24<SP>1</SP>, comparing this with the breakdown voltage of a Zener diode 37 and applying the result to feed the control winding of the magnetic amplifier 30. As shown the quenching element 22 is directly in series with the main elements 19, 19<SP>1</SP> and the supply. In alternative arrangements (Figs. 3 and 4, not shown) it is in the primary circuit of a transformer whose secondary winding forms this series connection. The main elements may be thyratrons or thyristors and the quenching element may be a transistor. A periodically varying output voltage may be obtained by applying to control windings of the magnetic amplifier a low frequency A.C. voltage (Figs. 3, not shown). The output of the inverter may be rectified to produce D.C. to D.C. conversion. Resonant circuits may be connected to the output transformer secondary winding (Fig. 4, not shown) to improve the commutation.
Patent GB-1059643-A (GB)
Title: Improvements in or relating to processes for preparing corticoid compounds
IPC: C07J5/00
Filed: 1964-06-02
Abstract: The invention comprises (a) a process for preparing 5-pregnene-3b ,17a ,21 - triol - 20 - one - 21 - acylates by reaction of a 5-pregnene-3b ,17a -diol-20-one or its 3-acetate with two moles of bromine to form a mixture of 5,6,21-tribromo-3b ,17a -diol-20-ones, separating the 5a ,6b ,21-tribromo isomer by addition of a basic reagent, and treating this with two to three moles of a sodium, potassium or calcium iodide in the presence of a sodium, potassium or calcium carboxylate having up to 6 carbon atoms, and (b) 5a ,6b ,21 - tribromo - pregnane - 3b ,17a  - diol-20-one and its 16a -hydroxy derivative.  Unprecipitated 5,6,21-tribromo-compounds may be treated with zinc dust and acetic acid or with chromous chloride to regenerate the starting material.  The products may be subsequently oxidized chemically or microbiologically, optionally by way of their 5,6-dibromo-derivatives, to their 3-keto-D 4-analogues.
Patent GB-1047583-A (GB)
Title: A tube bending machine having an automatic pushing-off device
IPC: B21D11/22
Filed: 1963-06-10
Abstract: 1,047,583. Bending tubes. HILGERS MASCHINEN-UND APPARATE-BAUANSTALT MIT BESCHRANKTER HAFTUNG. June 10, 1963 [June 19, 1962], No. 23006/63. Addition to 908,978. Heading B3E. A tube-bending machine in which a tube is bent around a rotated template, the unbent part being supported internally by a mandrel, and which has a device acting parallel to the mandrel axis in order to push the workpiece off the mandrel after the bending operations are completed is characterized in that the pushing- off device comprises a gripper member carried by a piston-rod and gripping the bent-over portion of the workpiece adjacent the bending template, the piston-rod or the cylinder cooperating therewith being pivotal in the plane of the mandrel. A tube bent around a former 10 with its straight unbent portion supported internally by a mandrel, is removed from the mandrel and former by a gripper head 13 moved parallel to the mandrel axis by a piston in a cylinder 23. In order that the gripper 13 may be moved out of the way of the tube during bending the cylinder 23 is swung about a pivot 56 on a plate 55 by piston and cylinder means 59 also mounted on the plate 55. The table 55 comprises upper and lower plates 55a, 55b, Fig. 3 (not shown), adjustable on one another by screw-and-slot means 63-66. The table 55 is also pivotable at 67 about an axis parallel to the mandrel so that a bend out of the plane of the former 10 may be gripped.
Patent GB-993410-A (GB)
Title: Catalysts for polymerizing epoxy compounds
IPC: C08G65/12
Filed: 1961-06-27
Abstract: Cyclic oxides having 2 to 6 carbon atoms and one oxygen atom in the ring are polymerized with a catalyst comprising a mixture or reaction product of (A) an aromatic metal compound of the formula MeRn, where Me is aluminium, beryllium or zinc, R is F, Cl, Br, I, CN or R1, at least one being R1 where R1 is an aromatic hydrocarbon group of 6 to 20 carbon atoms which may be halo- and/or cyano-substituted, and n is the valency of Me, with (B) a cocatalyst which is (i) water, (ii) a water-soluble or miscible aliphatic alcohol, polyhydric alcohol or polyalkylene ether polyol of molecular weight up to about 600, (iii) mixtures of (i) and (ii), or (iv) the acidic oxide of alumina with or without an oxide of a metal of Groups II to IV.  The polymerizable compounds may be mono- or polyepoxides and may contain unsaturation. Many examples are given.  Copolymers and graft polymers are included. Many examples are also given of catalysts and cocatalysts.  These may be reacted together or added in any order with the monomers.  The catalyst residues may be removed from the polymer by washing, neutralizing &c., or anti-oxidants may be added before or during polymerization.  The formation of gels or cross-links may be inhibited by nitro compounds or by excluding light.  The polymers may be compounded with pigments, fillers, plasticizers, dyes, rubbers, other resins &c., many of which are specified.  Both saturated and unsaturated polymers may be cured. The examples describe the polymerization of propylene oxide alone and with butadiene monoxide, using diphenyl zinc and water, diphenyl zinc and methanol and di-p-chlorophenyl zinc and water.ALSO:A catalyst for polymerizing cyclic oxides (see Division C3) comprises a mixture or reaction product of (A) an aromatic metal compound of the formula MeRn, where Me is aluminium, beryllium or zinc, R is F, Cl, Br, I, CN or R1, at least one being R1 where R1 is an aromatic hydrocarbon group of 6-20 carbon atoms which may be helo- and/or cyano-substituted, and n is the valency of Me, with (B) a co-catalyst which is (i) water, (ii) a water-soluble or miscible alcohol, polyhydric alcohol or polyalkylene ether polyol of molecular weight up to about 600, (iii) mixtures of (i) and (ii), or (iv) the acidic oxide of alumina with or without an oxide of a metal of Group II to IV.  Many examples of (A) and (B) are given.  They may be mixed together before contacting the monomer or added in any order to the monomer.  The examples describe the use of diphenyl zinc and water, diphenyl zinc and methanol, and di-p-chlorophenyl zinc and water.
Patent GB-363303-A (GB)
Title: Improvements in or relating to artificial bait
IPC: A01K85/12
Filed: 1931-08-19
Abstract: 363,303. Fishing tackle. GRIFFITHS, T. L., Beacon Works, Bradford Street, Birmingham. Aug. 19, 1931, No. 23320. [Class 48.] A spinner comprises a central tube 6 having one or more helical rubber vanes 8. The vanes are formed in one piece with a rubber tube mounted on an inner metal tube and taper off at each end. A hook 12 is attached to the line through a side hole in the tube and a hook 4 to the end of the line. The hook 4 is protected by flexible flaps 9.
Patent GB-533578-A (GB)
Title: Improvements in or connected with sliding clasp fasteners
IPC: A44B19/36
Filed: 1939-08-14
Abstract: 533,578. Sliding-clasp fasteners. KUNA, J. Aug. 14, 1939, No. 23410. [Class 44] The stringers 1, 2 of a sliding clasp fastener are provided with a hook and eye fastener 6, 7 at their free ends. The members 6, 7 are clamped on to the beaded edges of the stringers, which may be provided with folded covers of reinforcing material 8, 9. The members 6, 7 are situated beyond the row of usual clasp members a and may replace the usual end stops. Alternatively the fastener may comprise a member 6', Fig. 5, with cylindrical bead which slips endwise into a slotted tubular member 7'.
Patent GB-301563-A (GB)
Title: Improvements in and relating to the manufacture of artificial silk
IPC: D01F2/04
Filed: 1927-09-06
Abstract: 301,563. Carpmael, K., and Carpmael, K. S., (Representatives of Carpmael. W.)., (I. G. Farbenindustrie Akt.-Ges.). Sept. 6, 1927. Addition to 280,628. Ammoniacal-copper cellulose solutions, processes for making filaments from ; apparatus for making filaments.-The process of the parent Specification for the stretch spinning of ammoniacal-cupper cellulose so utions at low temperatures, for example, at 20‹-30‹ C. or below is modified by increasing the length of the vertical column of water used as coagulant to substantially above 35 centimeters and preferably to between 50 and 80 centimeters. At the end of its path the thread is completely coagulated. As a result of this increased path of coagulation ammoniacal-copper solutions prepared from cotton can be spun in addition to those prepared from wood pulp, straw, or passes, such as alfa grass. Specification 8083/02, [Class 120, Spinning], is referred to.
Patent GB-523770-A (GB)
Title: Improvements in or relating to pulverisers
IPC: B02C15/12
Filed: 1939-01-13
Abstract: 523,770. Ball-and-ring mills. BABCOCK & WILCOX, Ltd. Jan. 13, 1939, No. 23458. Convention date, April 22, 1938. Divided out of 523,753. Drawings to Specification. [Classes 23 and 59] The pulverizer described is the same as that described in Specification 523,753, but the invention claimed is a rotary classifier disposed above the grinding elements within the pulverizer casing and below an opening for material-laden fluid and includes a number of blades disposed around a vertical axis and provided on their forward faces with longitudinally, downwardly extending pockets or grooves adapted to trap oversize particles entrained in the gaseous fluid flowing between the blades and to lead the particles to one side of the stream of gaseous fluid before discharging them to the material inlet side of the grinding elements. Another aspect of the invention comprises a rotary classifier above a row of balls arranged between upper and lower rings, an upward air blast around the periphery of the rings carrying the ground material to the classifier which returns oversize particles to the inner side of the grinding balls.
Patent GB-164267-A (GB)
Title: Improvements in self-acting spinning mules and twiners
IPC: D01H3/12
Filed: 1920-08-11
Abstract: 164,267. Mellor, H., Carter, E., Barlow, H., Foden, G., and Field, 0. Aug. 11, 1920. Mules and twiners. -In an arrangement in which the boot-leg is provided with a vertical face to obtain an even tension in the backing-off chain, in order to maintain the face vertical and provide for adjustment of the faller shaft centre to suit different lengths and inclinations of spindles, the slide block is adjustably mounted on the carriage. The slide block 1 moves in guides 4 in a slide 5 adjustable on a bracket 6 secured to the carriage 7. The slide 5 has a rib sliding in an horizontal groove in the brake 6. A screw bolt 13 passes through a hole in the bracket and a horizontal slot 11 in the guide to secure the two together. The slide block has a vertically adjustable locking-bowl 2 and an horizontally adjustable bowl 3 to engage the building rail.
Patent GB-614868-A (GB)
Title: Improved means for facilitating the correct marking and the checking of articles in laundries
IPC: D06F93/00
Filed: 1946-08-08
Abstract: 614,868. Endless-belt conveyers. HAYDOCK, J. Aug. 8, 1946, No. 23502. [Class 78 (i)] Means for facilitating the marking and checking of laundry articles comprises an endless belt a, containers b resting on and frictionally propelled by the belt, and catches d, e, f, g, h, for arresting the motion of the containers at the loading end A, prior to and just beyond the marking position at B and C, and at the delivery end D and loading end E. On the lower run the containers are inverted and suspended from the belt, the catches at the loading end being interconnected as also are those at the marking position. At the loading end the interconnection of the catches d and h is made by a rod j operated by a pedal i. At the marking position the catches e and fare interconnected by a rod n and the operation is in conjunction with the marking apparatus which is returned to "blank" when the catches are released. The containers have angle brackets c by which they are attached to the belt when inverted.
Patent GB-204334-A (GB)
Title: Improvements in water heaters for gas cooking stoves
IPC: F24C13/00
Filed: 1923-09-20
Abstract: 204,334. Ulli, A. Sept. 25, 1922, [Convention date]. Gas cooking-stoves; hot-plates; boilers, arrangement of.-Water is heated in gas cooking-stoves in conical annular boilers 4 with edges 6 adapted to rest on the hot plate 1 so that the burners 5 are surrounded. The boilers communicate with one another and with a reservoir 2. The whole is made in one casting. Bars 11 for supporting cooking vessels above them and drain plugs 9 at the lowest parts of the boilers are provided.
Patent GB-718518-A (GB)
Title: Improvements in or relating to a closure for a wall opening
IPC: E06B3/26
Filed: 1951-10-09
Abstract: 718,518. Windows; draught excluding, glazing. LOBL, A., and HAYMERLE, F. Oct. 9, 1951, No. 23523/51. Class 20 (3) A closure construction for a wall opening comprises a casement frame of box section formed by a side wall 10 lying in a plane at right angles to the pane &c. 18 and by at least one end wall 12 parallel to the pane &c. and having a flange 14 substantiallly parallel to the side wall to form a corner, and resiliently deformable elements 20 detachably seated in this corner and interposed between the end wall and another frame member 8 of the closure, to retain and seal the pane. The construction may be made from metal or a plastic. As shown the casement frame with walls 10, 11, 12 and inclined wall 15 fits into the window frame 3, 4, 5, 6, the latter wall being inclined, and flange 8 serving as a stop ledge. The rubber retaining strip 20 secured by anchoring elements 22 is grooved at 19 to receive the pane 18. The inner pane 25 is carried by a similar retaining strip 24 which is secured to an angle frame 26 and abuts the casement frame when frame 26 is closed. Frame 26 is covered by strips 28. The casement is hinged by straps 16 to pins 9 to which the frame 26 is also pivoted by bearing .eyes 27, and a locking mechanism with handle spindle 30, pusher crank mechanism, and locking bars which slidably engage in recesses in the window frame, are mounted on brackets 29 on strip 15. The sealing strip 31, Fig. 2, has a lug 33 forming a soft and resilient buffer. The box section window or door frame may be filled with a plastic or thermoplastic mass, e.g. cement with or without reinforcement, or synthetic resin, &c.
Patent GB-1240336-A (GB)
Title: Allylic terpenic alcohol production
Inventor: SULLY BERNARD THOMAS DUDLEY
IPC: C07C33/02
Filed: 1968-05-17
Abstract: 1,240,336. Terpenic alcohols. BUSH BOAKE ALLEN Ltd. 12 May, 1969 [17 May, 1968], No. 23647/68. Heading C2C. C 10  Allylic terpenic alcohols are prepared by hydrolysing C 10  allylic terpenic halides in aqueous hydrotropic solutions of an alkali metal or ammonium salt of a benzene- or C 1-4  alkylbenzene sulphonic acid which is of sufficient concentration to cause said halides which are normally sparingly soluble in water to become dissolved in the hydrotrope solution. The hydrotrope may be a Na, K or NH4 salt of benzene, toluene, cymene or xylene sulphonic acid, sodium xylene sulphonate being especially preferred. The reaction is preferably conducted at a pH of 7 or above by means of a buffer or mild base e.g. NaHCO 3 . Preferably at least 40 parts by weight of the sulphonate per 100 parts by total weight of water and sulphonate are present. In the examples myrcene hydrochloride (i.e. a mixture of myrcenyl chloride, linalyl chloride, geranyl chloride and neryl chloride) is converted to linalol and α-terpineol.
Patent GB-424587-A (GB)
Title: Improvements in and relating to dentures
IPC: A61C13/00
Filed: 1933-08-25
Abstract: 424,587. Artificial dentures. EDWARDS, R., Argyll Lodge, South Cliff, Scarborough, Yorkshire. Aug. 25, 1933, No. 23680. [Class 81 (ii)] Dentures, particularly those for the lower jaw, comprise a soft rubber lining accurately moulded to fit the gums and a hard toothcarrying part moulded to fit the soft portion, the two parts being detachably or otherwise connected solely at a small number of separate points located at the crest of the gum ridge. In the form shown the two parts are connected by press-fastenings 4, 5, but other complementary interengaging connecting means may be employed. Partial dentures may be provided with two or more lining parts each attached to the hard part at a single point only. In upper dentures the lining covers the palatal portion also, but is attached only at the gum ridge preferably at one central and two lateral points. The soft rubber part is formed on a model of the patient's jaw and vulcanized. When cured by dry heat, an impression of the soft-rubber lining is taken whilst the latter is still in place on the original model and is used for moulding the hard part of the denture ; but if steam vulcanization be employed for the lining the original model becomes destroyed and the lining is mounted on a duplicate model before the impression is taken. In the latter case the models are formed with registering formations, such as grooves, to ensure accurate positioning of the lining on the second model and the corresponding projections on the lining are subsequently cut away. Alternatively the lining may be moulded with a hard vulcanite rim and thin plaster be poured into the inverted lining to support it during the taking of an impression, the rim being afterwards removed. Reference has been directed by the Comptroller to Specification 7775/92, [Class 81].
Patent GB-536526-A (GB)
Title: Improvements in or relating to radio antennae
IPC: H01Q11/04
Filed: 1939-08-16
Abstract: 536,526. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 16, 1939, No. 23684. Convention date, Sept. 8, 1938. [Class 40 (v)] An aerial for radiating short waves with a predominantly-horizontal polarization comprises a series of half-wave dipoles 1 arranged in tiers cylindrically about the common axis. The system is energized by a transmission line 7 so that horizontally the currents are additive, whilst vertically they balance out. The dipole' wires are originally strung vertically between rings 3, which are then twisted in opposite directions as shown in Fig. 2. Fig. 3 illustrates the current distribution in successive half-wave sections.